Magnetostructural transition in Fe5SiB2 observed with neutron diffraction

0458224 - ÚJF 2017 RIV US eng J - Journal Article
Cedervall, J. - Kontos, S. - Hansen, T. C. - Balmes, O. - Martinez-Casado, F. J. - Matěj, Z. - Beran, Přemysl - Svedlindh, P. - Gunnarsson, K. - Sahlberg, M.
Magnetostructural transition in Fe5SiB2 observed with neutron diffraction.
Journal of Solid State Chemistry. Roč. 235, MAR (2016), s. 113-118. ISSN 0022-4596. E-ISSN 1095-726X
Institutional support: RVO:61389005
Keywords : magnetism * X-ray diffraction * neutron diffraction
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 2.299, year: 2016

The crystal and magnetic structure of Fe5SiB2 has been studied by a combination of X-ray and neutron diffraction. Also, the magnetocrystalline anisotropy energy constant has been estimated from magnetisation measurements. High quality samples have been prepared using high temperature synthesis and subsequent heat treatment protocols. The crystal structure is tetragonal within the space group I4/mcm and the compound behaves ferromagnetically with a Curie temperature of 760 K. At 172 K a spin reorientation occurs in the compound and the magnetic moments go from aligning along the c-axis (high T) down to the ab-plane (low T). The magnetocrystalline anisotropy energy constant has been estimated to 03 MJ/m(3) at 300 K.
Permanent Link: http://hdl.handle.net/11104/0258499